OEM Carrier 40VA Control Transformer HT01BD209 for Model PY2PPB030060NB

This OEM control transformer is the factory-specified replacement for the Carrier PY2PPB030060NB packaged heat pump unit. The transformer steps down line voltage (120V) to the 24V AC signal used by the control board, thermostat, and all low-voltage components. When this part fails, the entire control circuit goes dark — the thermostat loses communication, relays won't energize, and the system appears completely unresponsive. A failed or shorted transformer is one of the most common causes of a total system no-response condition.

• Specs: Input: 120V AC | Output: 24V AC | VA Rating: 40VA | OEM Part Number: HT01BD209 | Factory-matched to Carrier PY2PPB030060NB control circuit requirements
• OEM vs Generic: This OEM transformer is wound and rated to Carrier's exact factory specifications. Generic replacements often carry imprecise VA ratings or substandard insulation, risking control board damage or nuisance tripping of the built-in secondary fuse.
• Install Difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers. Always verify 0V at primary terminals before handling wiring. Photograph all wire connections prior to removal.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed and factory-matched for the Carrier PY2PPB030060NB packaged heat pump. Verify your unit's data plate shows HT01BD209 as the transformer part number before ordering. If you have any fitment questions, our HVAC parts specialists are available to confirm compatibility before you buy — same-day shipping guaranteed on in-stock orders.